/*
 * Copyright 2019 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.optaweb.vehiclerouting.service.distance;

import org.optaweb.vehiclerouting.domain.Coordinates;

/**
 * Calculates distances between coordinates.
 */
public interface DistanceCalculator {

    /**
     * Calculate travel time in milliseconds.
     *
     * @param from origin
     * @param to destination
     * @return travel time in milliseconds
     * @throws DistanceCalculationException when the distance between given coordinates cannot be calculated
     */
    long travelTimeMillis(Coordinates from, Coordinates to);
}
